CVE-2026-86122
Rowboat through 0.9.1 Server-Side Request Forgery via Custom MCP Server
- State
- Published
- Severity
- 5.3 Medium
- Published
- Sep 5, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 5, 2026
Description
Rowboat through 0.9.1 fails to validate custom MCP server and webhook URLs, allowing authenticated users to configure arbitrary destinations. Attackers can point these URLs at internal services and cloud metadata endpoints to perform server-side request forgery and enumerate internal network topology.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N | VulnCheck |
| 3.1 | 5.0 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
rowboatrowboatlabs |
|
References
- GitHub Issue #621issue-tracking
- validateHttpHttpsUrl scheme-only checktechnical-description
- Unvalidated webhook fetch and MCP client connecttechnical-description
- https://github.com/rowboatlabs/rowboatproduct
- VulnCheck Advisory: Rowboat through 0.9.1 Server-Side Request Forgery via Custom MCP Serverthird-party-advisory
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